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SAE 5W-30 $18 good deal or not [semi-synthetic] 5 Quart?

xxxHolic 31,526 5,566 December 17, 2015 at 08:20 PM
SAE 5W-30 for $18 good deal or not [semi-synthetic]?
Is their a big diff between semi-synthetic and synthetic? This is for 2000 used car.
I can get 5 quart semi-synthetic 5W-30 for $18.
or
5 quart 5W-30 Conventional for $15.

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#2
Yes, there is a big difference between semi-synthetic/synthetic blends and full synthetic. If you're doing your oil changes at somewhere between 3k-7k miles, either of those should be perfectly acceptable choices.
The issue with semi-synthetic is that it's a very broad definition, so you could be getting something with very little synthetic in it.
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#3
For the price difference I would probably go simisynthetic.

You can buy Mobile 1 on sale for that price point a few times a year with rebate. With a car from 2000, if your driving it ot the ground not sure I would bother with synthetic. As long as the oil you buy meets spec and you change it as the manufacture recommends any oil will do.
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#4
Quote from Frogstar View Post :
Yes, there is a big difference between semi-synthetic/synthetic blends and full synthetic. If you're doing your oil changes at somewhere between 3k-7k miles, either of those should be perfectly acceptable choices.
The issue with semi-synthetic is that it's a very broad definition, so you could be getting something with very little synthetic in it.
Quote from LiquidRetro View Post :
For the price difference I would probably go simisynthetic.

You can buy Mobile 1 on sale for that price point a few times a year with rebate. With a car from 2000, if your driving it ot the ground not sure I would bother with synthetic. As long as the oil you buy meets spec and you change it as the manufacture recommends any oil will do.
I don't really care about the 2000 used car. I only care about saving gas. Will semi-synthetic save gas better than Conventional?
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#5
Quote from xxxHolic View Post :
I don't really care about the 2000 used car. I only care about saving gas. Will semi-synthetic save gas better than Conventional?
Opinions may vary here but in general the answer is no, not enough for you to feel a difference. Maybe 2% variation.

What you should make sure is whether your car doesn't require or strongly prefer full syn. I had a 2001 Saab that i only put expensive full synthetic oil into because it was a turbo and also the engine was known for sludge issues. Also have a 2000 Camry v6 in the family and same thing there - engine is prone to sludge so we only put full syn in.
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#6
Quote from Ero View Post :
Opinions may vary here but in general the answer is no, not enough for you to feel a difference. Maybe 2% variation.

What you should make sure is whether your car doesn't require or strongly prefer full syn. I had a 2001 Saab that i only put expensive full synthetic oil into because it was a turbo and also the engine was known for sludge issues. Also have a 2000 Camry v6 in the family and same thing there - engine is prone to sludge so we only put full syn in.
It's 2000 Nissan Maxima V6.
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#7
I always use full synth. For what little it costs as an upgrade and the recommended oil changes in today's cars (DW's is about 10k (2014) and mine is ~ 20k (2008)), it's cheap insurance. Ask most mechanics what the best way is to help your engine live a long life and it will be using quality oil and changing it. I use M1EP in both my cars but started using it because it was the only OE recommended oil I could find without special order.

As for that M1EP is significantly cheaper @ WM if you buy in 5Q jugs - less than $30 a jug vs. like $8/.qt at the auto parts store.
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#8
Quote from xxxHolic View Post :
I don't really care about the 2000 used car. I only care about saving gas. Will semi-synthetic save gas better than Conventional?
Quote from xxxHolic View Post :
It's 2000 Nissan Maxima V6.
Probably not noticeable enough to make up the extra cost your spend for oil cost. Most of the fuel savings is due to weight of oil and your keeping that part the same. Only thing that would save you money over time is a longer OCI from a full synthetic.
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#9
Quote from xxxHolic View Post :
I don't really care about the 2000 used car. I only care about saving gas. Will semi-synthetic save gas better than Conventional?
No, contrary to what Amsoil says. I asked Mobil if its Mobil 1 100% synthetic would improve fuel economy. "Not one bit" was their answer.

Look for the API (American Petroleum Institute) symbol and the term "ENERGY CONSERVING" to get oil that improves fuel economy a tiny bit. A long time ago, API had designations EC and EC II, and I think EC II oil improved fuel economy by 2%, but I think API now sanctions only EC, and the standard was changed, so EC oil saves only 0.5%. Apparently viscosity is the biggest factor for fuel economy, so you won't see 20W-50 oil with an EC rating.



Also 100% synthetic flows a lot more freely than conventional oil in really cold temperatures, like -40, even if the viscosity ratings are the same, as shown in this video [youtube.com], but I can't find anything demonstrating semi-synthetic.

Walmart has their 5-quart jugs of Super Tech 5W-30 100% synthetic for $17.47, conventional for $9.72, both SN quality.
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#10
Quote from larrymoencurly View Post :
No, contrary to what Amsoil says. I asked Mobil if its Mobil 1 100% synthetic would improve fuel economy. "Not one bit" was their answer.

Look for the API (American Petroleum Institute) symbol and the term "ENERGY CONSERVING" to get oil that improves fuel economy a tiny bit. A long time ago, API had designations EC and EC II, and I think EC II oil improved fuel economy by 2%, but I think API now sanctions only EC, and the standard was changed, so EC oil saves only 0.5%. Apparently viscosity is the biggest factor for fuel economy, so you won't see 20W-50 oil with an EC rating.



Also 100% synthetic flows a lot more freely than conventional oil in really cold temperatures, like -40, even if the viscosity ratings are the same, as shown in this video [youtube.com], but I can't find anything demonstrating semi-synthetic.

Walmart has their 5-quart jugs of Super Tech 5W-30 100% synthetic for $17.47, conventional for $9.72, both SN quality.
Damn. I wish I knew about 5-quart synthetic Super Tech 5W-30 $17.47 at Walmart. Haven't been to Walmart for 4 years.
Already bought this from Amazon for $18 Frown.

http://www.amazon.com/gp/product/...ge_o09_s00
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Last edited by xxxHolic December 20, 2015 at 01:13 PM
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#11
http://www.amazon.com/Mobil-11279...BPV4DQRYNX

amazon usually has mobil 1 five quart jugs in the low to mid $20's with free shipping and no tax for most.

if it goes out of stock wait for it to come back and the price usually lowers to mid $20's again
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all tech support threads will now be answered with possibly random and false information.
This is due to the retardedness of posters and answering posters in general.
thank you, have a nice day.
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